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1.发明申请METHOD AND DEVICE FOR ANALYSING A REGION OF INTEREST IN AN OBJECT USING X-RAYS 有权用于分析使用X-RAYS的对象中的兴趣区域的方法和装置公开(公告)号：US20130236079A1
公开(公告)日：2013-09-12
申请号：US13989507
申请日：2011-12-05
IPC分类号： G06T7/00
CPC分类号： G06T7/0012 , G01N23/046 , G01N2223/419
摘要： A method and a device for analyzing a region of interest in an object is proposed. The method comprises: (a) providing measurement data by a differential phase contrast X-ray imaging system, and (b) analyzing characteristics of the object in the region of interest. Therein, the measurement data comprise a 2-dimensional or 3-dimensional set of pixels wherein for each pixel the measurement data comprises three types of image data spatially aligned with each other, including (i) absorption representing image data A, (ii) differential phase contrast representing image data D, and (iii) coherence representing image data C. The analyzing step is based, for each pixel, on a combination of at least two of information comprised in the absorption representing image data A and information comprised in the differential phase contrast representing image data D and information comprised in the coherence representing image data C.
摘要翻译： 提出了一种用于分析对象中的感兴趣区域的方法和装置。 该方法包括：（a）通过差分相位X射线成像系统提供测量数据，以及（b）分析感兴趣区域中物体的特征。 其中，测量数据包括2维或3维像素集合，其中对于每个像素，测量数据包括彼此空间对准的三种类型的图像数据，包括（i）表示图像数据A的吸收，（ii）差分 表示图像数据D的相位对比度和（iii）表示图像数据C的相干性。分析步骤基于每个像素，包括在表示图像数据A的吸收中包括的信息中的至少两个信息和差分中包含的信息 表示图像数据D的相位对比度和表示图像数据C的相干性中包含的信息。
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公开(公告)号：US09767550B2
公开(公告)日：2017-09-19
申请号：US13989507
申请日：2011-12-05
CPC分类号： G06T7/0012 , G01N23/046 , G01N2223/419
摘要： A method and a device for analyzing a region of interest in an object is proposed. The method comprises: (a) providing measurement data by a differential phase contrast X-ray imaging system, and (b) analyzing characteristics of the object in the region of interest. Therein, the measurement data comprise a 2-dimensional or 3-dimensional set of pixels wherein for each pixel the measurement data comprises three types of image data spatially aligned with each other, including (i) absorption representing image data A, (ii) differential phase contrast representing image data D, and (iii) coherence representing image data C. The analyzing step is based, for each pixel, on a combination of at least two of information comprised in the absorption representing image data A and information comprised in the differential phase contrast representing image data D and information comprised in the coherence representing image data C.
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公开(公告)号：US09159462B2
公开(公告)日：2015-10-13
申请号：US14000414
申请日：2012-02-20
申请人： Ewald Rossl , Thomas Koehler , Roland Proksa
发明人： Ewald Rossl , Thomas Koehler , Roland Proksa
CPC分类号： G21K1/00 , A61B6/027 , A61B6/032 , A61B6/4035 , A61B6/4078 , A61B6/4233 , A61B6/482
摘要： The invention relates to a detection apparatus comprising a filter (20) for filtering a conical radiation beam (4) such that at least a first region (22) and a second region (23) of the radiation beam are generated having different energy spectra, wherein the first region of the radiation beam illuminates a first detector area (25) on a detection surface (21) of a detector, thereby generating a first set of detection values, and the second region of the radiation beam illuminates a second detector area (26) on the detection surface, thereby generating a second set of detection values. For example, by using the filter the detection apparatus can be used as dual-energy computed tomography apparatus, wherein, for instance, a standard computed tomography apparatus can be transformed to a dual-energy computed tomography apparatus by adding the filter to the standard computed tomography apparatus, preferentially without modifying the radiation source and the detector.
摘要翻译： 本发明涉及一种检测装置，其包括用于过滤锥形辐射束（4）的过滤器（20），使得产生具有不同能谱的辐射束的至少第一区域（22）和第二区域（23） 其中辐射束的第一区域照射检测器的检测表面（21）上的第一检测器区域（25），从而产生第一组检测值，并且辐射束的第二区域照亮第二检测器区域 26），从而产生第二组检测值。 例如，通过使用滤波器，检测装置可以用作双能计算机断层摄影装置，其中，例如，标准计算机断层摄影装置可以通过将滤波器加到标准计算机断层摄影装置 优选不改变辐射源和检测器的断层摄影装置。
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公开(公告)号：US20130329851A1
公开(公告)日：2013-12-12
申请号：US14000414
申请日：2012-02-20
申请人： Ewald Rossl , Thomas Koehler , Roland Proksa
发明人： Ewald Rossl , Thomas Koehler , Roland Proksa
IPC分类号： G21K1/00
CPC分类号： G21K1/00 , A61B6/027 , A61B6/032 , A61B6/4035 , A61B6/4078 , A61B6/4233 , A61B6/482
摘要： The invention relates to a detection apparatus comprising a filter (20) for filtering a conical radiation beam (4) such that at least a first region (22) and a second region (23) of the radiation beam are generated having different energy spectra, wherein the first region of the radiation beam illuminates a first detector area (25) on a detection surface (21) of a detector, thereby generating a first set of detection values, and the second region of the radiation beam illuminates a second detector area (26) on the detection surface, thereby generating a second set of detection values. For example, by using the filter the detection apparatus can be used as dual-energy computed tomography apparatus, wherein, for instance, a standard computed tomography apparatus can be transformed to a dual-energy computed tomography apparatus by adding the filter to the standard computed tomography apparatus, preferentially without modifying the radiation source and the detector.
摘要翻译： 本发明涉及一种检测装置，其包括用于过滤锥形辐射束（4）的过滤器（20），使得产生具有不同能谱的辐射束的至少第一区域（22）和第二区域（23） 其中辐射束的第一区域照射检测器的检测表面（21）上的第一检测器区域（25），从而产生第一组检测值，并且辐射束的第二区域照亮第二检测器区域 26），从而产生第二组检测值。 例如，通过使用滤波器，检测装置可以用作双能计算机断层摄影装置，其中，例如，标准计算机断层摄影装置可以通过将滤波器加到标准计算机断层摄影装置 优选不改变辐射源和检测器的断层摄影装置。
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公开(公告)号：US20090135998A1
公开(公告)日：2009-05-28
申请号：US12293845
申请日：2007-03-14
申请人： Ewald Rossl , Andy Ziegler
发明人： Ewald Rossl , Andy Ziegler
摘要： It is described a method for reducing noise of X-ray attenuation data related to a first and second spectral X-ray data acquisition. The method comprises the steps of (a) acquiring data representing the X-ray attenuation behavior of a region of interest, (b) determining a first and a second attenuation-base line integral for the first and the second X-ray acquisition, respectively, and (c) calculating expected first and second signal to noise ratios for the first and the second attenuation-base line integral based on given signal to noise ratios for the first and second spectral X-ray data acquisition, respectively. The method further comprises the steps of (d) repeating the above mentioned steps of determining the attenuation-base line integrals and calculating the expected signal to noise ratios for a further first spectral X-ray data acquisition and (e) selecting improved spectral X-ray data acquisitions in order to enhance the overall signal to noise ratio of a final X-ray image.
摘要翻译： 描述了一种用于降低与第一和第二光谱X射线数据采集相关的X射线衰减数据的噪声的方法。 该方法包括以下步骤：（a）获取表示感兴趣区域的X射线衰减特性的数据，（b）分别确定第一和第二X射线采集的第一和第二衰减基线积分 ，以及（c）分别基于用于第一和第二频谱X射线数据采集的给定信噪比来计算第一和第二衰减基线积分的期望的第一和第二信噪比。 该方法还包括以下步骤：（d）重复上述步骤以确定衰减基线积分并计算进一步的第一光谱X射线数据采集的预期信噪比，以及（e）选择改进的光谱X- 以提高最终X射线图像的整体信噪比。
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